diff --git a/wp-includes/post-template.php b/wp-includes/post-template.php
index d2fecb52a3..2a6569f298 100644
--- a/wp-includes/post-template.php
+++ b/wp-includes/post-template.php
@@ -668,7 +668,7 @@ function get_body_class( $class = '' ) {
 		$classes[] = 'no-customize-support';
 	}
 
-	if ( get_theme_mod( 'background_color' ) || get_background_image() )
+	if ( get_background_color() !== get_theme_support( 'custom-background', 'default-color' ) || get_background_image() )
 		$classes[] = 'custom-background';
 
 	$page = $wp_query->get( 'page' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7b99c714db..7afa3c4a33 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-beta4-32080';
+$wp_version = '4.2-beta4-32081';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.